Friction clutch-pulley.



(UMIAN r. or

Specification of Letters Patent.

FF ICTION CLUTQH-IULIJEY.

Patented Jan. 7, 1908. i

Application filed Ma /ll. 1907- Scrial No. 373.061.

To all whom it may QQdIV lii.

Be it known that l, Jon): GILSUN, oi' lort livashington, in the rounty ol' (lzuulree and State of Wisconsin, have invented an lznrovement in Friction-Pillleys, of which the ollowing is a specification. i

I This invention is an improvement in frietion pulleys of that particular elnss whieb are applied on the end of a driving shalt for the purpose ot-eonnertiug the lfnul llltl'llo.

The primary object of the/invention is t provide' t clutch pulley which is 'espeeially adapted for application to the crank-shalt of a gasengizie, whereby the pulley may be disengaged from the shaft so as to relieve the en gine of the load during the operation of start- 'member ing up the engine. V I

A furtherobjeet of the inyention is to provide a eluteh pullevwhich will gradually connect the loadto the shu-l t while the latter is in motion and without causing any jar or slaekening ot' the motor power.

A further object of the invention is to pro vide a strong, durable, and en-sily operated cluteh mechanism for gas operate with but little wear or the parts and when in clutched engagement willsecurely hold the clutched parts from slipping.

Other though minor objects of the invention will hereinafter appear, and what I claim as new will be speei'lieall set forth in, the appended claims.

in the aecompanying drawings, forming a part hereof: Figure l is a side View of a l'ri(.'- tion elutch constructed in aeeordaru-e with my invention. Fig. 2 is a longitudinal sec tional view thereof.

'Like numerals of rel'erenee indirnie like parts in both ligures of the drawings.

3'designates a elutrh-member wbieb is adapted to it upon lhe end ol' the shnl't, and the hub of said n'iember is provided in its outer end with an opening; 4. of smaller dinnn oter than the opening 5 which reeeives the shaft, said openings eonununieating with each other, as shown. This rlulrh-me|nber is provided at its inner end with a set-srrew 6, by which it l'nstened to the shaft, and adjoininp this set-serew with a i'iietion-disk 7,. the latter having a face with which the pulley engages, lmreinal'ter deseribed.

Looselyqnounted on the hub of the eluteha pulley 8, vhieh in the present instanee is what is termed a combination pulley, one partof which, as 9, being adapted nes which will l l l the l reeeive' a not I l l l l l l l jFl l j l l l i l lo reeeive a round belt, and the other part, as H), adapted for a llat belt, and said combined pulley is of such width that when one end is iireiiwigeiiierit with the friction disk 7 the other end is slightly within the outer The end ol the hub of the elutehonember 3.

pulley is placed on. the hub of the clutch-monk her with the larger part or pulley 9 next to the friction-disk I, and so that the outer face of said port or pulley sni islc. jSlidable upon the outer end of the-hub 0f the ("l[itch-member, so as to bear against the outer end of the combined pulle is a olutehmember 11, and the hub of thisl member is provided with .a hole through which nisses a bo t 12", said bolt also passing through the smaller opening 4 in the end of the eluteh-men l)('l 8, and is provided with a bend l3 wbieh' bears iwninst the shoulder 14 formed by the dill'e 11L size openings, and outer portion or said bolt is threaded t0 having a burnt-wheel 16f interposed belweeu the nut 15 find the lllll(lFHlPlHiHl' "H is a eompression-spring 80 27, and the tension of this springis regulated,

as will be obvious, by turning the nut on the threaded endoltho bolt. The clutch-member H is provided with an annular flange whieh serves the outer end ol the pulley ll) for a flat belt.

As will be understood by reference to Fig. 2 the bolt 12 turns loosely in the clutchmember 2*}, but is connected to the clutchmember 1} by a pin 18 on the latter ing in a groove in said bolt, so that when the clutehonember 11 is in frictional engagement with the pulley it will hold the bolt While' the nut is being turned. The clutch-member I; is fastened to the pulley is clumpedbetween the disk 7 and elul'clemember 11 all the parts will then turn with the shaft so as to engage the load therewith, mid by the provision of the spring there is a yielding engagement of the )ulley with the shaft so that any excess oi load suddenly applied will not stop the n10t0rpower.

The. belt is threaded in the direction that when the parts are being tightened the linn .l-wheel or nut is turned in the o )posite direction to the rotation of the shalt, and this provides that when the shaft is revolving is only necessary to hold the nut to I.

ti hteu the clutch-members on the pulley.

9 will lriel'ioually engage otter elutchpurpose of a guard at the engagshalt, and when the 4 2 emsoo As heretoforestated the deviceis specially disk, and slidable' clutch-meinber, a nut on, e adapted forges-engines, so that in starting the threaded endof the bolt hinting ahnndr. 3 up 'the engine the driving-shaft thereof may wheel, and e compression springfon'fthe bolt, be relieved of the load; but'of course I'do between the 'nut and movableleluteh-niem 5 not intend that the application ofthe pulley 'ber. 4 85 shall be limited to this extent; x 3. In a friction pulley, the combination Having thus described my invention, what with a rotatable shaft, of a, elutehrmemben" TI claim as new and desire-tosecure by Let: fixedzthereone dv having a huband fri'etio w ters-Pet'ent, is-

v 4 disk, :1; bolt loosely engaginguthel'hub at one, 1'0 1. In a friction pulley, the combination end a'nd threndedat its e hegfend, aseeon'ddo, with a rotatable shaft, ofa clutch-member clutch memberslidable upon the outertend; fixed thereon andhaving a hub and frictionof.v the hub and, rotMnbly."engaging.,the, lgolt, disk, a bolt loosely engaging the. hub at one said seoond, Clutch-member, a pro; 7 end and threaded .at its other end, 'a, second jeotingfii nge,aoombinntionipulleyjnqunts 15 olutoh-membei' sli'dable upon the outer ended' on thehubandhavingla widevendwhiglimig of the hub and rotatably engaging the, bolt, Jen'gages the, friotion-disk end a nerrower apulley loosely mounted on the hub: of the, end with whielilthe;nioveblqlolutfih-mtlmbr 'fixed clutch-member between the frictions: engages and beyondzwhich the flan e disk and slidable clutch-member, end a nut eats, a nut on the threaded .end oiftieibolt;

2(Ladaptedto move the slidable elutch-memavin'g a; hand-wheel, and-a, compression fiq g her a ainstthe outer end of the pulley. spring on theboltbetween thenut and moy-g I 2. n a. friction pulley the combination a le olutoh-me nber,substantiallyasshown, v with a, rota tableshaft, 0t '9. clutch-member and described;

. fixed thereon and having a hub and friction-' In testimony whereoffl have,siggr regl,my.

25 disk, a bolt-loosely engaging: the hub at one name to this s'peoifieation in thepreseneeQotg5- end and threaded at its other endfn second two subscribing witnesses.

oluteh-rnernber slidable upon the outer end V JOHN GIISQN.

of thehub and rotatably engaging the bolt Witnesses;

1 pulle "loosely mounted on the hub of the v HARR W. BoL'fENs' 30 fined GutOh-Ihlllbfl between. the friction-. T. A; BoERNnnL 

